Anger, like expressions of fear, can be seen as a blind form of control.
Various forms of control are attempts by a living being to alter its environment (and its connections to other living things) in order to sustain itself. If this is in the mutual interest of other beings connected to the being, or can be sustained by the environment (for the time being) then this control can perpetuate the organization of a given living body. But past a certain point, and control accelerates volatility.
Implied in this arrangement is an outpouring of wills, which either collapse into each other through assent, or bend against each other in dissent.
One microcosmic instance worth mentioning is the attitude of those who look after elderly people with dementia. People with dementia become confused and forgetful easily, and may bumble about, against the wishes of their caregivers, which can be frustrating.
But to lash out in anger, or fear, causes those with dementia to turn away, and their symptoms to worsen, as even those with limited cognitive ability know when their will is being subverted, which is a basic fact recognized by skilled caregivers.
As a side note, it is interesting that David Shapiro, in his study of pathological styles, conceptualized paranoia as an extreme expression of executive control, as an overdriven form of OCD, which he called a police state of the mind.
This is not meant to be a condemnation of anger or fear as such; both are things that happen and have their uses, but then the overindulgence of these things are inadvisable, as is the overindulgence of many things.
Anger and fear seek to compress a given organization into a harmonic body, but which pushed to extremes, and upon attempting the compression of too many conflicting wills, could induce a violent and expansionary reaction in which an organized body rapidly unwinds and disperses.
This process can be seen as dialectic, as it is a growing volatility which produces the anger and fear, which can reverse a volatility, compress it to another point in time, or increase volatility after a certain point of inflection.
